XQ

Xi Qingyuan

Overall (All Time): #3,017,316 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9440142 Blocking mechanism for amusement game with multiple lifting pins Donald C. Campion, Xiwen Jiang 2016-09-13